package com.cai.io.demo;

import java.io.*;

public class BufferCopyFileDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("demo.txt");
        FileOutputStream fos = new FileOutputStream("demo_cp.txt");

        BufferedInputStream bis = new BufferedInputStream(fis);
        BufferedOutputStream bos=new BufferedOutputStream(fos);
        int d;
        while ((d=bis.read())!=-1){
            bos.write(d);
        }
        bis.close();
        bos.flush();
        bos.close();

    }
}
